Pontiac Aztek electrical problem?

Pontiac Aztek (2003) 3.4 litre with 75,000 kms. Driving down the road, when I went to put my windows up (they're power windows), they wouldn't go up. None of them, from any door. I then noticed that my signal lights weren't working either. Checking for other things, I discovered the wipers didn't work, nor my heater. Everything else seems to be fine. I was out of province, on a weekend. Took it to a dealer. Because of time restraints (I had to get home), the only got so far before I had to leave. Here is what they did;

Scan check, B1354, B2617, B2628, U1016. Checked for service bulletins, none found. Checked fuses, OK. Started removing console to access BCM for diagnosis. Not enough time to complete diagnosis. Reassembled console.

Any ideas would be greatly appreciated!